THERASENSE, INC. (now known as Abbott Diabetes Care, Inc.) and Abbott Laboratories, Plaintiffs-Appellants, v. BECTON, DICKINSON AND COMPANY, and Nova Biomedical Corporation, Defendants-Cross Appellants; Therasense, Inc. (now known as Abbott Diabetes Care, Inc.) and Abbott Laboratories, Plaintiffs-Appellees, v. Becton, Dickinson and Company, and Nova Biomedical Corporation, Defendants-Appellants